Electrode structure of a laminated metallization film capacitor

Abstract

An electrode structure of a laminated metallization film capacitor includes at least two laminated metallization films. Each metallization film is further disposed with a plurality of metal-uncoated curved gap strips with a certain width on the plane of section of the laminated metallization film capacitor core to separate two adjacent metal coating units partially or totally. A center of the curved gas strip is concaved with a notch. Both sides of the notch form like misaligned shoulders. A projection forms opposite to the open of the notch; in two adjacent curve gap strips. An extreme point of the projection of one curve gap strip is disposed inside the notch of the other one in any event.

The invention claimed is: 
     
       1. An electrode structure of a laminated metallization film capacitor, comprising at least two laminated metallization films; two adjacent metallization films are laminated with a preset misalignment width longitudinally; each metallization film respectively comprising a conductive metal coating and an insulation dielectric layer, the conductive metal coating is film coated on the insulation dielectric layer; each metallization film is disposed with at least a metal-uncoated gap strip with a certain width laterally, the gap strip forms a margin of the metallization film; wherein:
 each metallization film is further disposed with a plurality of metal-uncoated curved gap strips with a certain width on the plane of section of the laminated metallization film capacitor core to separate two adjacent metal coating units partially or totally; a center of the curved gas strip is concaved with a notch, both sides of the notch form like misaligned shoulders, a projection forms opposite to the open of the notch; in two adjacent curve gap strips, an extreme point of the projection of one curve gap strip is disposed inside the notch of the other one in any event. 
 
     
     
       2. The electrode structure of a laminated metallization film capacitor according to  claim 1 , wherein the opens of notches of the curved gap strips in two adjacent upper and lower metallization films are faced in a same direction or in opposite direction. 
     
     
       3. The electrode structure of a laminated metallization film capacitor according to  claim 1 , wherein in two adjacent upper and lower metallization films, the metal coating of the upper metallization film is connected to a first electrode, the metal coating of the lower metallization film is connected to a second electrode, a preset distance is disposed between the first electrode and the second electrode on the plane of section. 
     
     
       4. The electrode structure of a laminated metallization film capacitor according to  claim 1 , wherein the width of each curved gap strip is equal or unequal, the width of the each curved gap strip is greater than or equal to 0.1 mm. 
     
     
       5. The electrode structure of a laminated metallization film capacitor according to  claim 1 , wherein the curved gap strip comprises a first curved gap strip, a second curved gap strip, a third curved gap strip and a fourth curved gap strip joined in order as one. 
     
     
       6. The electrode structure of a laminated metallization film capacitor according to  claim 5 , wherein:
 the curved gap strips are disposed on the plane of section of the laminated metallization film capacitor core, the plane of section and the longitudinal direction set at a preset angle, when the preset angle is distorted reversely on the plane of section and the curved gap strips, the plane of section and the longitudinal direction coincide, the first curved gap strip, the second curved strip, the third curved strip and the fourth curved gap strip match any of the following: 
 the fourth curved gap strip is a curved section from a preset position of the curved gap strip to the margin of the metallization film, the second curved gap strip is a curved section from a leftmost end point of a curved gap strip section removing the fourth curved gap strip to a rightmost end point thereof; 
 when the open of the notch faces left, the first curved gap strip is a curved section from an end to a leftmost end point of a curved gap strip section removing the fourth curved gap strip, the third curved gap strip is a curved section from a rightmost end point of a curved gap strip section removing the fourth curved gap strip to the preset position of the curved gap strip; 
 when the open of the notch faces right, the first curved gap strip is a curved section from an end to a rightmost end point of a curved gap strip section removing the fourth curved gap strip, the third curved gap strip is a curved section from a leftmost end point an curved gap strip section removing the fourth curved gap strip to the preset position of the curved gap strip. 
 
     
     
       7. The electrode structure of a laminated metallization film capacitor according to  claim 6 , wherein in two adjacent upper and lower metallization films, the film width of the upper metallization film is set to be b 1 , the distance from the preset position of the upper metallization film to an film edge in the margin side is set to be b 11 , the misalignment width of the upper metallization film with respect to the lower metallization film is set to be b 12 ; the film width of the lower metallization film is set to be b 2 , the distance from the preset position of the lower metallization film to an film edge in the margin side is set to be b 21 , the misalignment width of the lower metallization film with respect to the upper metallization film is set to be b 22 ;
 following formulas are satisfied therebetween:
     b 11+ b 12+ b 21> b 1 
     b 21+ b 22+ b 11> b 2 
 
 When the film width of the two adjacent upper and lower metallization films is equal, so is the width the misalignment widths thereof and a distance from the preset position to a film edge of the margin:
   b1=b2, b12=b22, b11=b21; 
     b 11>( b 1− b 12)/2;
 
     b 21>( b 2− b 22)/2.
 
 
 
     
     
       8. The electrode structure of a laminated metallization film capacitor according to  claim 6 , wherein an end of the first curved gap strip is joined to the second curved gap strip, another end of the first curved gap strip is disposed with a preset distance by an edge of the metallization film or an end of the metallization film;
 the preset distance is greater than or equal to 0 mm; 
 the length of the first curved gap strip is greater than or equal to 0 mm. 
 
     
     
       9. The electrode structure of a laminated metallization film capacitor according to  claim 6 , wherein in two adjacent curved gap strips:
 whatever direction the notch faces, an leftmost end point of a curved gap strip section formed from a right curved gap strip removing the fourth curved gap strip is aligned with a right end point of the preset position of the fourth curved gap strip of the left curved gap strip, or a leftmost end point of a curved gap strip section formed from a right curved gap strip removing the fourth curved gap strip is on the left of a right end point of the preset position of the fourth curved gap strip of the left curved gap strip; 
 whatever direction the notch faces, a rightmost end point of a curved gap strip section formed from a left curved gap strip removing the fourth curved gap strip is aligned with a left end point of the preset position of the fourth curved gap strip of the right curved gap strip, or a rightmost end point of a curved gap strip section formed from a left curved gap strip removing the fourth curved gap strip is on the right of a left end point of the preset position of the fourth curved gap strip of the right curved gap strip. 
 
     
     
       10. The electrode structure of a laminated metallization film capacitor according to  claim 6 , wherein an end of the fourth curved gap strip is joined to the third curved gap strip, another end of the fourth curved gap strip is connected to the margin of the metallization film;
 Whatever direction the notch faces, a rightmost point of the metallization film between two adjacent left and right fourth curved gap strips is aligned with a rightmost end point of a curved gap strip section formed from a left curved gap strip removing the fourth curved gap strip; or a rightmost point of the metallization film between two adjacent left and right fourth curved gap strips is on the left of a rightmost end point of a curved gap strip section formed from a left curved gap strip removing the fourth curved gap strip; 
 Whatever direction the notch faces, a leftmost point of the metallization film between two adjacent left and right fourth curved gap strips is aligned with a leftmost end point of a curved gap strip section formed from a right curved gap strip removing the fourth curved gap strip; or a leftmost point of the metallization film between two adjacent left and right fourth curved gap strips is on the right of a leftmost end point of a curved gap strip section formed from a right curved gap strip removing the fourth curved gap strip.